21+9s-10=-277

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Solution for 21+9s-10=-277 equation: 



21+9s-10=-277

We move all terms to the left:

21+9s-10-(-277)=0

We add all the numbers together, and all the variables

9s+288=0

We move all terms containing s to the left, all other terms to the right

9s=-288

s=-288/9

s=-32

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